Hydraulic intensifier.



W. T. SEARS.

HYDRAULIC INTENSIPIER.

I APPLIOATION FILED MAY 2, 1910.

966,059. Patented Aug. 2, 1910.

151% I II HI-'- I 22' 21 2g I k. 5

2 l -I i 2:. III IHI I 6 J0 (Mum/L gm Witnesses:

I Inventor WW (p.595,

Attorney W. T. SEARS.

HYDRAULIG INTENSIFIER.

APPLICATION FILED MAY 2, 1910.

Patented Aug. 2, 1910.

2' SHBETS-SHEET 2.

MW 1. 55am Inventor W w. 509

' Attorney Witnesses:

UNITED STATES PATE T OFFICE.

WILLARD '1. SEAR$, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0NILES-BEMENT- POND COMPANY, OF JERSEY CITY, NEW JERSEY.

HYDRAULIC INTENSIFIEB.

Specification of Letters Patent.

Patented Aug. 2, 1910.

Application filed May'2, 1910. Serial No. 558,886. 7

To all whom 'it may concern:

Be it known that I, WILLARD T. SEARS, a

citizen of the United States, residing -at ful Improvements in HydraulicIntensifiera.

of which the following is a specification;

This invention relates to hydraulic intensifiers, or apparatus designedto cause steam or other fluid at comparatively low pressure to produce ahigh pressure of water or other liquid for use in hydraulic presses,forging machines etc., and the invention will be readily understood fromthe following description taken in. connection with the accompanyingdrawings in which Figure 1 is a side elevation, part central verticatsection, of a hydraulic intensifier embodying my invention. Fig. 2 ahorizontal section, partly diagrammatic, the section being taken in theplane of line a of Figs, 1 and 3: and Fig. 3 a vertical section of thevalve-adjusting device, taken in the plane of line I) of Fig. 2. I p

In the drawings, giving present attention to Fig. 1 :--1, indicates theI intensifier plunger which by forceful entrance into the intensifiercylinder is to produce the high pressure of liquid to be dealt with: 2,the intensifier cylinder in which the plunger works: 3, the motorcylinder, in axial alinement with the intensifier cylinder: 4, tierodscoupling the two cylinders together: 5, pistomof the motor cylinder, thesame being connected with the intensifier plun er: 6, the steam-chest'of the motor cylin er: 7,

"steam inlet to the steam chesti'8, steam exhaust from the steam chest:9, portplacing the steam-chest in communication with the lower part ofthe motor cylinder: 10, the

steam valve working in the steam chest and adapted to place the lowerpart of the motor cylinder in communication, selectively, with the steaminlet orsteam exhaust: 11, the lower portion of the stem of valve 10:12, the upper portion of the valve stem, the contiguous ends of the twostem-portions being separated from each other and reversely threaded:13, a turnbuckle connecting the contiguous ends of the two portions ofthe valve-stem, the exterior of this turnbuckle being cylindrical andlongitudinally toothed so as to form. a pinion of considerable length:14, a rack on the upper end of the upper portion of the valve-stem: 15 asheave plunger 22,

- pressure,

having its shaft mounted in a fixed bearing contiguous-to rack 14: 16, apinion fast on the shaft of sheave 15 and engaging the rack of thevalve-stem: 17, an upper sheave, the two sheaves being separated fromeach other a distance not less than the maximum travel of the motorpiston: 18, a cable or chain having bothits ends in wrapping connectionwith and fastened to the lower sheave, the intermediate portion of thecable passing over the upper sheave and the cable being kept taut,whereby upward or downward motion of one side of the cable will enforcerotation of the lower sheave and consequent rising or falling of thevalve-stem and steam-valve: 19, an arm projecting from the combinedpiston-rod and intensifier plunger and having its outer portion securedto one side of the cable so that, that side of the cable moves up ordown with the motor piston: 20, a rigidly supported bracket providedwith a bearing in which the toothed turnbuckle 13 may rotate and slide:21, a block sliding in bracket 20 at right angles to the valve-stem, oneof the longitudinal faces of this block being toothed and engaged withthe teeth of the turnbuckle, the block being provided also with twocylindrical bores, one

opening at one end of the block and the otherat the other end: 22, astationary tubular plunger engaging one of the bores in the block: 23,{L'Slllllltll plunger engaging the other bore, the outer ends of the twoplungers being rigidly supported to prevent endwise motionof theplungers: 24, a typical controlling valve for controlling the motions ofthe rack-block: 25, inlet for controlling liquid to the casing of thiscontrolling valve: 26, outlet for liquid from the casing of thiscontrolling valve: 27 a conduit placing the controlling valve incommunication, through with the block bore working in that plunger: and28, a conduit placing the controlling valve in communication with theblock-bore of the other plunger.

(Vith the controlling valve in the osition seen in Fig. 2v thecontrolling liqui ,under may go to the block-bore for plunger 22, withthe effect of forcing the rack-block to the left and turning theturnbuckle in one direction, the controllin valve at this time placingthe block-bore or the other hand, the controlling-valve be given a tilquarter turn the liquid acting on the block will move the block to theright and turn the turnbuckle in the opposite direction If, While therack-block is moving in either direction the valve be placed on lapliquid can neither enter nor leave the rack-block and the rack-blockwill be locked in adjusted longitudinal position and the turnbuckle Willbe locked in adjusted angular position.

' inder. As the motor piston rises it causes,

through the cable and rack and pinion, an upward movement ofthevalve-stem and valve and promptly puts the steamevalve again on lap,the steampiston andintensifier plunger then coming to rest until therackblock is again moved to still further lengthen the valve-stem andagain admit steam to the motor cylinder, and so on throughout the strokeof the intensifier plunger, the adjustment of the turnbuckle for theopening of the steam valve for admission being followed by the closureof the valve. And, similarly, when the rack-block is moved in theopposite direction so as to permit steam to exhaust from the motorcylinder, the exhaust quickly closing, and further movement of the motorpiston and intensifier plunger calling for a pilot action on the part ofthe rack-block.

The system provides'for a very facile and positive control of theintensifienplunger and, by the use of a hydraulic system for themovement of the rack-block, the motion of the intensifier plunger may bebrought under the stated control from a distance, and without movingtransmitting mechanism, and by simple apparatus.

A study of Fig. 1 will develop the fact that, through the medium of arm19 and wrapping connector 18, the movement of the motor piston becomestransmitted to wheel 15 at equal rate of speed precisely as though themotion were transmitted through rack and gear, and that the pinion l6engaging the rack of the valve-stem. serves in greatly reducing the rateof motion between the motor piston and the valve. In the drawings I haveillustrated the turnbuckle as double-ended, that is to say, it isscrewed at both ends, but it will be obvious that the same effect wouldbe gotten if the turnbuckle were swiveled to one part of the valve-stemand screwed to the other. In any event the turnbuckle is to be taken asa portion of the valve-stem which, when rotated in one di* rection orthe other, serves to alter the effective length of the valve-stem or thedistance between the valve and the mechanism which operates it.

The motor has been referred to as a steam motor, and such would be thepractical preference, though other motive fluid might be employed in themotor, hence in the claims steam is to be considered as merely anexemplifying motive fluid. Similarly, water has been referred to asliquid in the intensifier, and in the valve-adjusting part of thedevice, but Water is to be considered as merely an exemplifying liquid.

I claim z- 1. A hydraulic intensifier comprising, an intensifiercylinder, an intensifier plunger, a steam cylinder, a piston thereinconnected with the intensifier plunger, a steam valve adapted to controlthe flow of steam to and from below the steam piston, a valve stemconnected with the steam valve, mechanism connecting the intensifierplunger and the valve-stem to cause the plunger to move the stem inharmony with it but at reduced rate of travel, and means for manuallyadjusting the effective length of the valvestem, combined substantiallyas set forth.

2. A hydraulic intensifier comprising, an intensifier cylinder, anintensifier plunger, a steam cylinder, a piston therein connected withthe intensifier plunger, a steam valve adapted to control the fiow ofsteam to and from below the steam piston, a valve stem connected withthe steam valve, a rack connected with the valve stem, a pinion engagingthe rack, mechanism connecting the intensifier plunger with the pinionto cause the valve-stem to move in harmony with the plunger but atreduced rate of travel, and means for manually adjusting the effectivelength of the valve-stem, combined substantially as set forth.

3. A hydraulic intensifier comprising, an intensifier cylinder, anintensifier plunger, a steam cylinder, a piston therein connected withthe intensifier plunger, a steam valve adapted to control the flow ofsteam to and from below the steampiston, a valve stem connected with thesteam valve, a rack connected with the valve stem, a pinion engaging therack, a wheel mounted on the pinion, a second wheel, a wrappingconnector engaging the two wheels and connected positively with thefirst-mentioned wheel, a connection between the intensifier plunger andthe wrapping connector to cause the wrapping connector to move with theplunger, and means for manually adjusting the effective length of thevalve-stem, combined substantially as set forth.

4:. A hydraulic intensifier comprising, an intensifier cylinder, anintensifier plunger,

a steam cylinder, a piston therein connected with the intensifierplunger, a steam valve adapted to controlthe flow of steam to and frombelow the steam piston, a twopart valve stem connected with the steamvalve, mechanism connecting the intensifier plunger and the valve stemto cause the plunger to move the stem inharmony with .it but at reducedrate of travel, a turnbuckle connecting the two parts of the valve-stem,and means for manually rotating the turnbuckle for adjusting theeffective length of the valve-stem, combined substantially as set forth.

. 5. A hydraulic intensifier comprising, an intensifier cylinder, anintensifier plunger,

a steam cylinder, a piston therein connected with the intensifierplunger, a steam valve adapted to control the flow of steain to and frombelow the steam piston, a two-part valve stem connected with the steamValve, mechanism connecting the intensifier plunger and the valve-stemto cause the plunger to move the stem in harmony with it but at reducedrate of travel, a turnbuckle connecting the two parts of the valve-stem,a pinion carried by the turnbuckle, a rack engag ing the pinion, andmeans for manually adjusting the rack endwise, combined substantially asset forth.

6. A hydraulic intensifier comprising, an intensifier cylinder, anintensifier plunger, a steam cylinder, a piston therein connected withthe intensifier plunger, a steam valve adapted to control the flow ofsteam to and from below the steam piston, a two-part valve-stemconnected with the steam valve, mechanism connecting the intensifierplunger and the valve-stem to cause the plunger to move the stem inharmony withit but at reduced rate of travel, a turnbuckle connectingthe two parts of the valve stem and having its periphery toothed to forma long pinion, a rack engaging the pinion, and means for manuallyadjusting the rack endwise, combined substantially as set forth.

7. A hydraulic intensifier-comprising, an intensifier cylinder, anintensifier plunger, a steam cylinder, a piston therein connected withthe intensifier plunger, a steam valve adapted to control the flow ofsteam to and from below the steam piston, a two-part valve steinconnected with the steam valve, mechanism connecting the intensifierplunger and the valve-stem to cause the plunger to move the stem inharmony withit but at reduced rate'of travel, a turnbuckle connectingthe two parts of the valve-stem, a pinion carried by the turnbuckle, areciprocating block having a plunger-bore in eachof its ends, a rackcarried by the block and engaging the pini0n,-a fixed hollow plungerengaging each bore of the block, water connections to each of theplungers, and a valvular device for controlling the flow of water to andfrom the plungers, combined substantially as set forth.

8. A hydraulic intensifier comprising, an intensifier cylinder, anintensifier plunger, a steam cylinder, a piston therein connected withthe intensifier plunger, a steam valve adapted to control the flow ofsteam to and from below the steam piston, a two-part valve stemconnected with the steam valve, mechanism connecting the intensifierplunger and the valve-stem to cause the plunger to move the stem inharmony with it but at reduced rate of travel, a turnbuckle connectingthe two parts of the valve-stem, a

pinion carried by the turnbuckle, a rack en-' gaging the pinion, andmanually controlled hydraulic mechanism for adjusting the rack endwise,combined substantially as set forth.

9. A hydraulic intensifier comprising, an intensifier cylinder, anintensifier plunger, a steam cylinder, a piston therein connected withthe intensifier plunger, a steam valve adapted to control the flow ofsteam to and from below the steam piston, a two-part valve-stemconnected with the steam valve, mechanism connecting the intensifierplunger and the valve-stem to cause the plunger to move the stem inharmony with it but at reduced rate of travel, a rotary member connectedwith the valve-stem and serving by its rotation to lessen or increasethe effective length of the stem, and means for manually adjusting theangular position of said rotary member, combined substantially as setforth.

WILLARD T. SEARS;

Witnesses:

R RAYMOND PORTER, CHARLES W. ANIsoN.

